<?php

/*
 * Copyright (C) 2014-2016 Deciso B.V.
 * Copyright (C) 2014 Warren Baker <warren@decoy.co.za>
 * Copyright (C) 2003-2005 Bob Zoller <bob@kludgebox.com>
 * Copyright (C) 2003-2005 Manuel Kasper <mk@neon1.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

require_once("guiconfig.inc");
require_once("interfaces.inc");

$a_domainOverrides = &config_read_array('unbound', 'domainoverrides');

if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    if (isset($_GET['id']) && !empty($a_domainOverrides[$_GET['id']])) {
        $id = $_GET['id'];
    }
    $pconfig =  array();
    $pconfig['domain'] = isset($id) && !empty($a_domainOverrides[$id]['domain']) ? $a_domainOverrides[$id]['domain'] : null;
    $pconfig['ip'] = isset($id) && !empty($a_domainOverrides[$id]['ip']) ? $a_domainOverrides[$id]['ip'] : null;
    $pconfig['descr'] = isset($id) && !empty($a_domainOverrides[$id]['descr']) ? $a_domainOverrides[$id]['descr'] : null;
} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_GET['id']) && !empty($a_domainOverrides[$_POST['id']])) {
        $id = $_POST['id'];
    }
    $input_errors= array();
    $pconfig = $_POST;

    /* input validation */
    $reqdfields = explode(" ", "domain ip");
    $reqdfieldsn = array(gettext("Domain"),gettext("IP address"));

    do_input_validation($pconfig, $reqdfields, $reqdfieldsn, $input_errors);
    if (!empty($pconfig['domain']) && substr($pconfig['domain'], 0, 6) == '_msdcs') {
        $subdomainstr = substr($pconfig['domain'], 7);
        if ($subdomainstr && !is_domain($subdomainstr)) {
            $input_errors[] = gettext("A valid domain must be specified after _msdcs.");
        }
    } elseif (!empty($pconfig['domain']) && !is_domain($_POST['domain'])) {
        $input_errors[] = gettext("A valid domain must be specified.");
    }

    if (!empty($pconfig['ip'])) {
        if (strpos($pconfig['ip'],'@') !== false) {
            $ip_details = explode("@", $pconfig['ip']);
            if (!is_ipaddr($ip_details[0]) && !is_port($ip_details[1])) {
                $input_errors[] = gettext("A valid IP address and port must be specified, for example 192.168.100.10@5353.");
            }
        } elseif (!is_ipaddr($pconfig['ip'])) {
            $input_errors[] = gettext("A valid IP address must be specified, for example 192.168.100.10.");
        }
    }

    if (count($input_errors) == 0) {
        $doment = array();
        $doment['domain'] = $pconfig['domain'];
        $doment['ip'] = $pconfig['ip'];
        $doment['descr'] = $pconfig['descr'];

        if (isset($id)) {
            $a_domainOverrides[$id] = $doment;
        } else {
            $a_domainOverrides[] = $doment;
        }

        mark_subsystem_dirty('unbound');
        write_config();
        header(url_safe('Location: /services_unbound_overrides.php'));
        exit;
    }
}

$service_hook = 'unbound';
legacy_html_escape_form_data($pconfig);
include("head.inc");
?>
<body>
  <?php include("fbegin.inc"); ?>
  <section class="page-content-main">
    <div class="container-fluid">
      <div class="row">
        <?php if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
        <section class="col-xs-12">
          <div class="content-box">
            <form method="post" name="iform" id="iform">
              <div class="table-responsive">
                <table class="table table-striped opnsense_standard_table_form">
                  <tr>
                    <td style="width:22%"><strong><?=gettext("Edit Domain Override entry");?></strong></td>
                    <td style="width:78%; text-align:right">
                      <small><?=gettext("full help"); ?> </small>
                      <i class="fa fa-toggle-off text-danger"  style="cursor: pointer;" id="show_all_help_page"></i>
                    </td>
                  </tr>
                  <tr>
                    <td><a id="help_for_domain" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Domain");?></td>
                    <td>
                      <input name="domain" type="text" id="domain" size="40" value="<?=$pconfig['domain'];?>" />
                      <div class="hidden" data-for="help_for_domain">
                          <?=gettext("Domain to override (NOTE: this does not have to be a valid TLD!)"); ?><br />
                          <?=gettext("e.g."); ?> <em><?=gettext("test"); ?></em> <?=gettext("or"); ?> <em>mycompany.localdomain</em> <?=gettext("or"); ?> <em>1.168.192.in-addr.arpa</em>
                      </div>
                    </td>
                  </tr>
                  <tr>
                    <td><a id="help_for_ip" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("IP address");?></td>
                    <td>
                        <input name="ip" type="text" id="ip" size="40" value="<?=$pconfig['ip'];?>" />
                        <div class="hidden" data-for="help_for_ip">
                          <?=gettext("IP address of the authoritative DNS server for this domain"); ?><br />
                          <?=gettext("e.g."); ?> <em>192.168.100.100</em><br />
                          <?=gettext("To use a nondefault port for communication, append an '@' with the port number."); ?><br />
                        </div>
                    </td>
                  </tr>
                  <tr>
                    <td><a id="help_for_descr" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Description");?></td>
                    <td>
                      <input name="descr" type="text" id="descr" size="40" value="<?=$pconfig['descr'];?>" />
                      <div class="hidden" data-for="help_for_descr">
                        <?=gettext("You may enter a description here for your reference (not parsed).");?>
                      </div>
                    </td>
                  </tr>
                  <tr>
                    <td>&nbsp;</td>
                    <td>
                        <input name="Submit" type="submit" class="btn btn-primary" value="<?= html_safe(gettext('Save')) ?>" />
                        <input type="button" class="btn btn-default" value="<?= html_safe(gettext('Cancel')) ?>" onclick="window.location.href='/services_unbound_overrides.php'" />
                        <?php if (isset($id)): ?>
                        <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                        <?php endif; ?>
                    </td>
                  </tr>
                </table>
              </div>
            </form>
          </div>
        </section>
      </div>
    </div>
  </section>
<?php include("foot.inc"); ?>
